21343232104 has 16 divisors (see below), whose sum is σ = 40024286820. Its totient is φ = 10670088960.

The previous prime is 21343232093. The next prime is 21343232179. The reversal of 21343232104 is 40123234312.

It can be written as a sum of positive squares in 2 ways, for example, as 16951519204 + 4391712900 = 130198^2 + 66270^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130359 + ... + 244294.

Almost surely, 2^21343232104 is an apocalyptic number.

It is an amenable number.

21343232104 is a deficient number, since it is larger than the sum of its proper divisors (18681054716).

21343232104 is a wasteful number, since it uses less digits than its factorization.

21343232104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381780 (or 381776 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21343232104 its reverse (40123234312), we get a palindrome (61466466416).

The spelling of 21343232104 in words is "twenty-one billion, three hundred forty-three million, two hundred thirty-two thousand, one hundred four".